Railroad-signal



(No Model.) v 2 sheets-sheet 1. J. R. JONES.

RAILROADSIGNAL.

N0. 513,934. Patented Jan. 30,1894.

WITNESSES.

A TTORNEY.

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(No Model.) I I 2 Sheets- Sheet 2.

- J. R. JON-ES.

RAILROAD SIGNAL.

No. 513,934; Patented Jan. 30,1894.

WITNESSES:

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1 UNITED STATES PATENT OFFICE.

JOSEPH. R. JONES, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF TWO- THIRDS TO THOMAS A. JONES, OF SAME PLACE, AND :JOSHUA WV. JONES OF HARRISBURG, PENNSYLVANIA.

RAILROAD-SIG NAL SPECIFICATION forming part of Letters Patent No. 513,934, dated January 30, 1894. Application filed February 23,1893. Serial No.463,4'70. (No model.)

To aZZ whom it may concern:

Be it known that I, JOSEPH R. J ONES, a citizen of the United States, residing in' the city and county of Philadelphia, State of Pennsyl- 5 Vania, have invented a new and useful Improvement in Railroad -Signals, which improvement is fully set forth in the following specification and accompanying drawings.

My invention consists of improvements in [0 the class of railroad signals having an oper.-

ating chain or connection which is independent of the primary lever, and adapted to expand or contract, due to heat or cold, and compensate for the same the parts thereof being hereinafter set forth.

Figures 1 and 2 represent side elevations of railroad signals embodying my invention. Fig. 3 represents a perspective view of a detached portion thereof, on an enlarged scale.

- sponding parts in the several figures;

Referring to the drawings: A designates a stand, and B designates the lever mounted thereon. Pivotally connected with the lower 2 5 end of said lever is a rod 0, which is pivotally connected with a clutch or grip D, the latter consisting of an ,angular or other shaped block, which is mounted on a traveler E, and having its upper end or limb F so disposed 0 that the chain G may pass freely through the space between said limb and the adjacent side of the traveler.

On the base of the stand A, is a post or standard H, on which is freely fitted the trav- 5 eler E, the latter thus being adapted to be raised and lowered on said standard. The upper portion of the chain G passes around the pulley J, and carries on its end the weight K, while said chain after passing through the traveler E is guided under a pulley Lfand connected with the T-shaped lever M, which is mounted on the standard N. The pulley L is supported on the road bed adjacent to the base of the stand A, and the standard N 5 has the signal arm P mounted upon it, one limb of said arm having the rod Q connected with it, and said rod being connected with the weighted lever B, which has its axis on the standard N.

S designates rods which are attached to the Similar letters of reference indicate correweighted lever R, and to the T-shaped lever M, whereby the motion of said lever M may be communicated to said lever R, and the signal arm P accordinglymoved or set as desired.

The operation is as follows, the normal 'position of parts being shown in Fig. 1: When the lever B is moved in the direction of the arrow, the rod 0 is raised, whereby the head F of the clutch D is pressed toward the chain G, and thelatter held tightly against the traveler E. As the clutch rises with the rod 0, the traveler is also raised, and the chain as clutched is carried up, whereby said chain operates the T-shaped lever M, and consequently drops or lowers the signal arm P. The slack of the portion of the chain above the traveler is taken up by the weight K. When the lever B is moved in the opposite direction, the rod 0 lowers,whereby the clutch and traveler and adjacent portion of the chain follow the same, and the clutch is drawn outwardly, whereby the chain is fully released; and the arm Pisraised to danger, as it exists in Fig. 1. It will be seen that the chain passes freely through the traveler, and is uncontrolled by either said traveleror the clutch D, it being however held taut by the Weight KLG'T Should, however, the chain contract, it rides freely over its guiding pulleys, and the weight K is overcome, and rises. Should, however, the chain expand, it will ride freely over its guiding pulley and the weight draw out the same, so as to take up the slack. A compensation is thus made for expansion or contraction of the chain, due to heat or cold, strain is removed from the parts with which the chain is connected, and breakage of the same is prevented.

In Fig. 2, I show two pulleys T, T, in lieu of the T-shaped lever M, and there are connected with the rods S the chains U. In this case, the travelers are two in number as at E, and each of the chains passes through one of the travelers it being noticed that each traveler has a clutch V mounted upon it, and the lever B has two rods 0' connected with it, said rods being attached respectively to the clutches V, so that either of the chains U may be operated in order to impart mo- 100 tion to the weighted lever B for lowering or raising the switch arm.

Should either chain or connection be cut or broken, when the signal arm is at danger, the said arm does not change its position, and should the signal arm be lowered, and the chains or connections be cut or broken, the weighted arm will set said arm at danger, the eifect of which is evident.

In lieu of the chainor chains, I may use a wire or wires, cord or cords, &c.

Should either chain or wire break, the spring W is employed to counteract the weight of the other chain or wire, and thus cause the weighted lever to place the signal arm at danger.

The traveler is stair-shaped, so that the chain passing the same may be firmly gripped by the teeth or angles presented by said traveler.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A signal arm in combination with an operating lever, a vertical traveler, a clutch block pivotally connected with said traveler,

a weighted chain passing between said block and traveler, a weighted lever connected with said signal arm, and a connecting mechanism substantially as described between said weighted lever and said weighted chain, all substantially as described.

2. A signal arm, an operating lever, a traveler vertically movable on a standard, a clutch block pivoted to said traveler, a Weighted chain passing between said block and traveler, a pulley over which the weight end of said chain passes, and mechanism formed of rods and levers connecting said chain with said signal arm, said parts being combined substantially as described.

3. In a signal, a weighted connection for the operating lever and signal arm, and a pulley over which the weighted end of said connection passes, in combination with a clutch which said weighted connection is adapted to move, the operation being substantially as described.

4. A signal arm having one end connected with a weighted lever, mechanism connected with a weighted chain for operating said arm, an operating lever, and a clutch block pivoted to a vertically movable traveler, said parts being combined substantially as described.

5. A signal arm, a weighted connection attached to said signal arm and the operating lever, a pivoted clutch block and a traveler which supports said block, and a standard on which said traveler is vertically movable, said parts being combined substantially as de scribed.

6. A signal arm, an operating lever with a clutch block attached thereto, a traveler on which said block is mounted, a weighted connection of the operating lever and signal arm passing between said block and traveler, and adapted to be clamped by said parts, the spring W and mechanism consisting of rods and levers attaching said spring and connection to the signal arm, said parts being combined substantially as described.

7. A signal arm, a weighted lever connected by a rod to one end of said arm, the rods S and lever M connected with said weighted lever for operating the same, the weighted chain G connected by spring W to said lever M, an operating lever and a clutch mechanism connected therewith for clamping said weighted chain, said parts being combined substantially as described.

JOSEPH R. JONES. Witnesses:

JOHN A. WIEDERSHEIM, R. H. GRAESER. 

